Demania

{{Short description|Genus of crabs}}

{{Automatic taxobox

| image = Specimen of Demania cultripes.JPG

| image_caption = Demania cultripes

| taxon = Demania

| authority = Laurie, 1906

}}

Demania is a genus of crabs in the family Xanthidae, containing the following species:{{cite journal |last1=Ng |first1=Peter K. L. |author-link=Peter Kee Lin Ng |last2=Guinot |first2=Danièle |author-link2=Danièle Guinot |last3=Davie |first3=Peter J. F. |date=January 2008 |title=Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world |url=https://lkcnhm.nus.edu.sg/wp-content/uploads/sites/10/app/uploads/2017/04/s17rbz.pdf |url-status=live |journal=Raffles Bulletin of Zoology |volume=17 |pages=1–286 |archive-url=https://web.archive.org/web/20110606061453/http://rmbr.nus.edu.sg/rbz/biblio/s17/s17rbz.pdf |archive-date=6 June 2011 |access-date=8 June 2011 |via=the National University of Singapore}}{{cite WoRMS|last=De Grave|first=Sammy|year=2020|title=Demania Laurie, 1906|id=204846|access-date=11 October 2024}}

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{{Linked species list

| † Demania ahramensis | Yazdi, Bahrami, Abbasi, Sadeghi & Vega, 2013

| Demania alcocki | Deb, 1987

| Demania armadillus | (Herbst, 1790)

| Demania baccalipes | (Alcock, 1898)

| † Demania chayiensis | (Hu, 1981)

| Demania crosnieri | Serene, 1984

| Demania cultripes | (Alcock, 1898)

| Demania garthi | Guinot & Richer de Forges, 1981

| Demania intermedia | Guinot, 1969

| Demania japonica | Guinot, 1977

| Demania mortenseni | (Odhner, 1925)

| † Demania pilipinas | Karasawa & Kato in Karasawa, Kato, Maac-Aguilar, Kurihara, Hayashi & Hagino, 2008

| Demania reynaudii | (H. Milne Edwards, 1834)

| Demania rotundata | Serene, 1969

| Demania scaberrima | (Walker, 1887)

| Demania serenei | Guinot & Richer de Forges, 1981

| Demania splendida | Laurie, 1906

| Demania toxica | Garth, 1971

| Demania unispinosa | Chen & Ng, 1999

| Demania wardi | Garth & Ng, 1985

}}

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Many species are known to be toxic to humans and domestic animals.{{Cite journal |author=John S. Garth |author2=Peter K. L. Ng |name-list-style=amp |year=1985 |title=Notes on the genus Demania Laurie, 1906 (Crustacea, Decapoda, Brachyura, Xanthidae) |journal=Indo-Malayan Zoology |volume=2 |pages=293–308 |url=http://isopods.nhm.org/pdfs/16149/16149.pdf |format=PDF}}{{cite journal | vauthors = Alcala AC, Alcala LC, Garth JS, Yasumura D, Yasumoto T | title = Human fatality due to ingestion of the crab Demania reynaudii that contained a palytoxin-like toxin | journal = Toxicon | volume = 26 | issue = 1 | pages = 105–7 | year = 1988 | pmid = 2894726 | doi = 10.1016/0041-0101(88)90142-0 }}